Saputri, S. E., and L. D. P. Karsono. “Customer Loyalty: Security, Sales Promotion, And E-Service Quality”. IQTISHADUNA: Jurnal Ilmiah Ekonomi Kita, Vol. 12, no. 2, Dec. 2023, pp. 149-62, doi:10.46367/iqtishaduna.v12i2.1453.